ORIGINAL: combatpigg
Hey there you engine GURUS........
got a couple questions about making a nice rod.....on par with a Nelson, Jett or RPM rod. The application is .40 and under 2 strokes.
I understand the bushings are best made from leaded phosphor bronze.
B-544...[B2}....or 532, 534, 545
I've done some searching, even through the local Kaman bearing supplier and all I can find is wholesale, bulk type suppliers.
Anyone know who will sell me 2 foot worth of 3/8'' round stock or maybe even tube?
Next question...the first rod I want to make has a .2185'' crank pin and a .2035'' wristpin. Where do I come up with the tooling to arrive at the final sized holes?
Finally, is the amount of crush of the bushing into the aluminum rod set by any standards to follow?
That's enough to chew on for now, I think. Thanks in advance.
The way I machined the bushed end was to machine the inside diameter of the rod to the O.D. of the bushing. I turned down the bronze and pressed it into the rod then re-machined the hole to fit the wrist pin.
The overall "wall thickness" of the bronze will make it tough to press it in the rod without deforming it. You're better off pressing it in as a solid pin and machining out the hole to fit the wrist pin leaving a thin bushing behind.
Just my opinion...